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    <p>I'm not 100% sure about what that code is supposed to do, but I can point out a few of things:</p> <ol> <li>I'm not sure how you would call that function with <code>e</code>, but without <code>s</code> . . . parameters are determined by their placement in the function definition, so, in this case, since it is defined as <code>function Validation(s, e)</code>, if you put only one parameter in, the function will consider it to be <code>s</code>. Technically, you could call the function like this: <code>Validation(undefined, e)</code>, but even then you are still sort of "defining" <code>s</code> as <code>undefined</code>.</li> <li><em>IF</em> you are saying that it doesn't work when you supply <code>s</code>, but not <code>e</code>, that is because leaving out <code>e</code> when you call the function, will make the value undefined. As soon as you try <code>e.value</code>, JS will throw the error "TypeError: e is undefined".</li> <li><code>s</code> does not appear to be used in the function, so there is nothing that can be known about it, other than it is a parameter of the function, but you can deduce from looking at the function that <code>e</code> is an object with, at least to properties: <code>value</code> and <code>isValid</code>. Additionally you can surmise that <code>isValid</code> is intended to store a Boolean value, given that it is assigned values of <code>false</code> in the code, but, since the sole use of <code>value</code> is as the parameter of a <code>String</code> constructor (which can accept a TON of different value types as a parameter), there's no real way of knowing what type of data it is intended to hold.</li> </ol> <p>That's all that I can think to offer at the moment.</p>
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